Hot-water boiler



2 Sheets-Sheet 1.

(No Model.)

R. F. BROWN. HOT WATER BOILER.

No. 424,174. Patented Mar. 25, 1890.

; J'i ya yawn Photo-Lithographer. Washingkm. n. c.

(No Model.) 2 Sheets-Sheet 2. R. 1?. BROWN.

HOT WATER BOILER.

No, 424,174. Patented Mar. 25, 1890.

UNITED STATES ATENT OFFICE.

ROYAL F. BROWN, OF CHICAGO, ILLINOIS.

HOT-WATER BOILER.

SPECIFICATION forming part of Letters Patent No. 424,174, dated March25, 1890.

Application filed October 24, 1889- Serial No. 328,037. (No model.)

To all whom, it may concern.-

Be it known that I, ROYAL F. BROWN, a citizen of the United States,residing at Chicago, Illinois, have invented certain new and usefulImprovements in I'Iot-WVater Boilers, of which the following is aspecification.

In the drawings, Figure 1 is a front elevation of my improved boilerwith the inclosingcase broken away. Fig. 2 is a plan view of a sectiontaken through the line 2 2 of Fig. 1. Fig. 3 is in part a verticalsection taken through the line 3 3 of Fig. 1, and Fig. 4 is a verticalsection taken through the line 4 4 of Fig. 2.

In making my improved hot-water boiler I make a fire-pot consisting of awater-ring inelosed on all sides. This water-ring is preferably madecircular in form, so that there will be no corners or projections in thefirepot to interfere with the complete combustion of all the fuel thatmay be placed therein,

though it may be made of square or of other form. It extends up as faras maybe desired, and, preferably, to about the top of the firebed. Itis made of double walls closed at the top and bottom, so as to afford aspace into which water may be introduced and permitted to circulate asit becomes heated.

In the drawings, the pipes through which the water is introduced intothe water-ring are designated as B, and they also constitute thereturn-pipes by which the water from the radiators is carried from timeto time into the boiler in the progress of its circulation. Rising fromthe water-ring are arranged a number of pipes O, which extend up adesired distance and turnin toward the center, terminating at theirinner ends in a central rectangular water-chamber D. This centralrectangular water-chamber is extended across or substantially acrossfrom one side of the fire-pot tothe other, and is preferably of shortdiameter from side to side. All of the water-pipes C from the water ringterminate in the lower portion of this central waterchamber, either onthe same plane, as particularly shown in Fig. 1, or on different planes,as may be preferred, and afford means for the water to rise from thewater ring as it becomes heated and pass upward into the centralwater-chamber. A large number of pipes E extend out horizontally, ornearly so, from the central water-chamber on each side, closed at theirouter ends and opening at their inner ends into the chamber. Thesehorizontal pipes are preferably arranged, as shown in Fig. 3, inalternate rows, so that the lire and products of combustion may freelyrise and circulate between them, striking the bottom and the sides ofeach tube, which would not so well be the case were they arranged inregular rows one above the other. In this way these pipes and the waterwith which they are filled are subjected to a much greater degree ofheat, so that much more beneficial results will be secured than wherethey are arranged in regular rows one above the other.

At the top of the central water-chamber one or more supply-pipes F arearranged, leading to the various radiators to be heated, so as to conveythe water from the central chamber to the radiators as it becomesheated.

It will be noticed that the central waterchamber is made rectangular inform and extends from about one side of the fire-pot to the other. Bythis arrangement I am able to secure ample space on each side for thearrangement of the horizontal Water-pipes and for the circulationbetween them of the heat and products of combustion. It will be furthernoticed that this central water-chamber is arranged above that portionof the fire-pot in which the bed. of coals is deposited and in which theactive combustion takes place. This enables me not only to directly heatthe bottom of this central chamber, but also to avoid the inconvenienceand detriment that necessarily result where the central reservoirextends down through the body of the fire to the bottom of the fire-pot,breaking up the body of coals and. preventing easy access to allportions of the fire-pot. It will be further noticed that the pipesrising from the waterring all turn to a horizontal position and convergeor terminate in the lower portion of the central water-chamber. Thisenables me to subject each of these pipes as well as the horizontalpipes extending out from the central water-chamber to direct heatthrough that portion of them. which is arranged in a horizontalposition, instead of relying upon the heat which would be imparted tothem along the sides as the heat and products of combustion move upward.In this way a much greater heat is necessarily imparted to the pipes andutilized in heating the water passing from the Water-ring through theminto the central water-reservoir.

I am aware of the construction shown and described in the Jewett patentof June 18, 1889, in which pipes lead from the water-ring to the upperportion of the central waterchamber instead of to its lower portiononly, and in which such water-chamberopens into a common reservoir atthe top, from which the supply-pipes lead, instead of from the centralwater-chamber, and I wish to disclaim such construction.

WVhat I regard as new, and desire to secure by Letters Patent, is-

In hot-water boilers, the combination of a fire-pot consisting of awater-ring, a rectangular central water-chamber arranged above the same,pipes connecting the Water-ring and the central Water-chamber at or nearthe bottom only of the latter, horizontal closed pipes extending outfrom the sides of the central water-chamber, supply-pipes leading out ofthe top of the central Water-chamber, and return-pipes leading into thewater-ring, sub-- 30 stantially as described.

ROYAL F. BROWN.

\Vitnesses:

GEORGE S. PAYSON, SUSIE CROWLEY.

